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// Scintilla source code edit control
/** @file LexCrontab.cxx
** Lexer to use with extended crontab files used by a powerful
** Windows scheduler/event monitor/automation manager nnCron.
** (http://nemtsev.eserv.ru/)
**/
// Copyright 1998-2001 by Neil Hodgson <neilh@scintilla.org>
// The License.txt file describes the conditions under which this software may be distributed.
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <stdio.h>
#include <stdarg.h>
#include "Platform.h"
#include "PropSet.h"
#include "Accessor.h"
#include "KeyWords.h"
#include "Scintilla.h"
#include "SciLexer.h"
static void ColouriseNncrontabDoc(unsigned int startPos, int length, int, WordList
*keywordLists[], Accessor &styler)
{
int state = SCE_NNCRONTAB_DEFAULT;
char chNext = styler[startPos];
int lengthDoc = startPos + length;
// create a buffer large enough to take the largest chunk...
char *buffer = new char[length];
int bufferCount = 0;
// used when highliting environment variables inside quoted string:
bool insideString = false;
// this assumes that we have 3 keyword list in conf.properties
WordList §ion = *keywordLists[0];
WordList &keyword = *keywordLists[1];
WordList &modifier = *keywordLists[2];
// go through all provided text segment
// using the hand-written state machine shown below
styler.StartAt(startPos);
styler.StartSegment(startPos);
for (int i = startPos; i < lengthDoc; i++) {
char ch = chNext;
chNext = styler.SafeGetCharAt(i + 1);
if (styler.IsLeadByte(ch)) {
chNext = styler.SafeGetCharAt(i + 2);
i++;
continue;
}
switch(state) {
case SCE_NNCRONTAB_DEFAULT:
if( ch == '\n' || ch == '\r' || ch == '\t' || ch == ' ') {
// whitespace is simply ignored here...
styler.ColourTo(i,SCE_NNCRONTAB_DEFAULT);
break;
} else if( ch == '#' && styler.SafeGetCharAt(i+1) == '(') {
// signals the start of a task...
state = SCE_NNCRONTAB_TASK;
styler.ColourTo(i,SCE_NNCRONTAB_TASK);
}
else if( ch == '\\' && (styler.SafeGetCharAt(i+1) == ' ' ||
styler.SafeGetCharAt(i+1) == '\t')) {
// signals the start of an extended comment...
state = SCE_NNCRONTAB_COMMENT;
styler.ColourTo(i,SCE_NNCRONTAB_COMMENT);
} else if( ch == '#' ) {
// signals the start of a plain comment...
state = SCE_NNCRONTAB_COMMENT;
styler.ColourTo(i,SCE_NNCRONTAB_COMMENT);
} else if( ch == ')' && styler.SafeGetCharAt(i+1) == '#') {
// signals the end of a task...
state = SCE_NNCRONTAB_TASK;
styler.ColourTo(i,SCE_NNCRONTAB_TASK);
} else if( ch == '"') {
state = SCE_NNCRONTAB_STRING;
styler.ColourTo(i,SCE_NNCRONTAB_STRING);
} else if( ch == '%') {
// signals environment variables
state = SCE_NNCRONTAB_ENVIRONMENT;
styler.ColourTo(i,SCE_NNCRONTAB_ENVIRONMENT);
} else if( ch == '<' && styler.SafeGetCharAt(i+1) == '%') {
// signals environment variables
state = SCE_NNCRONTAB_ENVIRONMENT;
styler.ColourTo(i,SCE_NNCRONTAB_ENVIRONMENT);
} else if( ch == '*' ) {
// signals an asterisk
// no state jump necessary for this simple case...
styler.ColourTo(i,SCE_NNCRONTAB_ASTERISK);
} else if( isalpha(ch) || ch == '<' ) {
// signals the start of an identifier
bufferCount = 0;
buffer[bufferCount++] = ch;
state = SCE_NNCRONTAB_IDENTIFIER;
} else if( isdigit(ch) ) {
// signals the start of a number
bufferCount = 0;
buffer[bufferCount++] = ch;
state = SCE_NNCRONTAB_NUMBER;
} else {
// style it the default style..
styler.ColourTo(i,SCE_NNCRONTAB_DEFAULT);
}
break;
case SCE_NNCRONTAB_COMMENT:
// if we find a newline here,
// we simply go to default state
// else continue to work on it...
if( ch == '\n' || ch == '\r' ) {
state = SCE_NNCRONTAB_DEFAULT;
} else {
styler.ColourTo(i,SCE_NNCRONTAB_COMMENT);
}
break;
case SCE_NNCRONTAB_TASK:
// if we find a newline here,
// we simply go to default state
// else continue to work on it...
if( ch == '\n' || ch == '\r' ) {
state = SCE_NNCRONTAB_DEFAULT;
} else {
styler.ColourTo(i,SCE_NNCRONTAB_TASK);
}
break;
case SCE_NNCRONTAB_STRING:
if( ch == '%' ) {
state = SCE_NNCRONTAB_ENVIRONMENT;
insideString = true;
styler.ColourTo(i-1,SCE_NNCRONTAB_STRING);
break;
}
// if we find the end of a string char, we simply go to default state
// else we're still dealing with an string...
if( (ch == '"' && styler.SafeGetCharAt(i-1)!='\\') ||
(ch == '\n') || (ch == '\r') ) {
state = SCE_NNCRONTAB_DEFAULT;
}
styler.ColourTo(i,SCE_NNCRONTAB_STRING);
break;
case SCE_NNCRONTAB_ENVIRONMENT:
// if we find the end of a string char, we simply go to default state
// else we're still dealing with an string...
if( ch == '%' && insideString ) {
state = SCE_NNCRONTAB_STRING;
insideString = false;
break;
}
if( (ch == '%' && styler.SafeGetCharAt(i-1)!='\\')
|| (ch == '\n') || (ch == '\r') || (ch == '>') ) {
state = SCE_NNCRONTAB_DEFAULT;
styler.ColourTo(i,SCE_NNCRONTAB_ENVIRONMENT);
break;
}
styler.ColourTo(i+1,SCE_NNCRONTAB_ENVIRONMENT);
break;
case SCE_NNCRONTAB_IDENTIFIER:
// stay in CONF_IDENTIFIER state until we find a non-alphanumeric
if( isalnum(ch) || (ch == '_') || (ch == '-') || (ch == '/') ||
(ch == '$') || (ch == '.') || (ch == '<') || (ch == '>') ||
(ch == '@') ) {
buffer[bufferCount++] = ch;
} else {
state = SCE_NNCRONTAB_DEFAULT;
buffer[bufferCount] = '\0';
// check if the buffer contains a keyword,
// and highlight it if it is a keyword...
if(section.InList(buffer)) {
styler.ColourTo(i,SCE_NNCRONTAB_SECTION );
} else if(keyword.InList(buffer)) {
styler.ColourTo(i-1,SCE_NNCRONTAB_KEYWORD );
} // else if(strchr(buffer,'/') || strchr(buffer,'.')) {
// styler.ColourTo(i-1,SCE_NNCRONTAB_EXTENSION);
// }
else if(modifier.InList(buffer)) {
styler.ColourTo(i-1,SCE_NNCRONTAB_MODIFIER );
} else {
styler.ColourTo(i-1,SCE_NNCRONTAB_DEFAULT);
}
// push back the faulty character
chNext = styler[i--];
}
break;
case SCE_NNCRONTAB_NUMBER:
// stay in CONF_NUMBER state until we find a non-numeric
if( isdigit(ch) /* || ch == '.' */ ) {
buffer[bufferCount++] = ch;
} else {
state = SCE_NNCRONTAB_DEFAULT;
buffer[bufferCount] = '\0';
// Colourize here... (normal number)
styler.ColourTo(i-1,SCE_NNCRONTAB_NUMBER);
// push back a character
chNext = styler[i--];
}
break;
}
}
delete []buffer;
}
static const char * const cronWordListDesc[] = {
"Section keywords and Forth words",
"nnCrontab keywords",
"Modifiers",
0
};
LexerModule lmNncrontab(SCLEX_NNCRONTAB, ColouriseNncrontabDoc, "nncrontab", 0, cronWordListDesc);
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